Cu/Fe-Cocatalyzed Meyer—Schuster-Like Rearrangement of Propargylic Amines: Direct Access to E-β-Aminoacryaldehydes.

Whereas electronic effects do not influence the reaction efficiency, steric effects have a major impact, with 4-substituted aryl amines providing the corresponding products in high yields, 3-substituted aryl amines leading to moderate yields and 2-substituted ones to only trace amounts of product.